OS-X – change username/home directory – El Capitan

As you may know when you change your username in OS-X you must change the home directory as well to match the new username (https://support.apple.com/en-us/HT201548). Now in El Capitan when you change the home directory […]

FreeNAS 10

A pretty nice update for FreeNAS, FeeNAS was already the best storage OS you can get, now with this update got even better. [youtube https://www.youtube.com/watch?v=8TS6vvpP1yQ?rel=0]

Incorrect argument handling in sendmsg(2)

To all the FreeBSD users out there, don’t forget to update your systems. The sendmsg(2) system call allows to send data to a socket. The data may be accompanied by optional ancillary data. For details please […]

while loop in csh

This made my day, while loop in one line -one liner- under csh printf “while ( 1 ) \n df -m \n echo ‘remaining space’ \n  sleep 60 \n end” | csh -f  Of course, you could […]

Bandwidth limiting on OS-X [Yosemite, El Capitan or *BSD]

Since Yosemite OS-X is not using ipfw but pf. So if you’re using those ipfw commands to limit your bandwidth, well… they won’t work. You’ll have to learn and implement some pf rules. The usage of […]


If you have dealt with regular expression then you know that it takes a while to get a good grasp on it. If you are just learning it here is an amazing tutorial: http://regexone.com. Enjoy 😉